2145225 has 12 divisors (see below), whose sum is σ = 3546896. Its totient is φ = 1144080.

The previous prime is 2145197. The next prime is 2145239. The reversal of 2145225 is 5225412.

It is a happy number.

2145225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2145225 - 2⁵ = 2145193 is a prime.

It is a Duffinian number.

2145225 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14227 + ... + 14376.

2^2145225 is an apocalyptic number.

2145225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145225 is a deficient number, since it is larger than the sum of its proper divisors (1401671).

2145225 is a wasteful number, since it uses less digits than its factorization.

2145225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28616 (or 28611 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 2145225 is about 1464.6586633069. The cubic root of 2145225 is about 128.9706681703.

The spelling of 2145225 in words is "two million, one hundred forty-five thousand, two hundred twenty-five".